Icons of Dolphin and Terminal

I have a small problem with KDE:
The icons of Dolphin and Terminal appear twice on on my desktops.

How can I solve this?

I have removed .kde4 in my home folder,
but the icons continue to be displayed.

Are the icons on the left side on icons-only task manager or are they just launchers?

The icons on the left side (on the right hand side of VLC) of the taskbar are displayed, when Dolphin and Terminal are open.

Right click the bottom panel and select edit panel. Then keep only the active icons-only task manager and remove the unnecessary quick-launchers/ widgets.

.

You are using two different widgets in your panel. You can remove one.